Railway signal system.



'PATEN'TED JUNE 2, 1908.

E. 120001;, RAILWAY SIGNAL SYSTEM.

APPLICATION FILED AUG. 30.1907.

6 SHEETS-SHEET 1.

INVENTOR WITNESSES:

Attorizg .No. 889,205. PATENTED JUNE 2, 1908. E. P. COOK.

RAILWAY SIGNAL SYSTEM.

APPLIOATIQN FILED we. 30,1907.

5 SHEETS-SHEET 2 WITNESSES No. 889,205. PATENTED JUNE 2, 1908.

B. P. 000K. RAILWAY SIGNAL SYSTEM.

APPLICATION FILED AUG. 30.1907.

6 SHEETS-SHEET 3.

I llllllll] ill WIT/V5555 INVENTOR f By PATENT ED JUNEQ, 1908.

E. P. 000K.

RAILWAY SIGNAL SYSTEM.

APPLICATION FILED ma. 30.1'901.

mums-sum 4.

INVENTOR K @4540, v [6/ WITNESSES Aflomey PATENTED JUNE 2, 1908.

13. P. COOK. AILWAY SIGNAL SYSTEM.

APPLICATION FILED AUG. 30.1907.

5 SHEETS-'SHEET 5 U 5 {y 4 h -11.! I w 5 1W. JM FT 1 n 1% 1 i P Ill H 1 Q 5 w n w r L M fig k h. 1 3 l X W 1 Mm v No. 889,205.

- zen of the United States, residing at Oberlin, in the county of Dauphin and State of Penn UNITED TAI PATENT oi rron;

, ,EMoR r. ooorcio'r OBERL-IN, PENNSYLVANIA.

Specification of Iietters Patent.

/ nAi wAy SIGNAL sYs'rEM.

Patented June 2, 1908.

I Application flled- August so, 1907, semi No. 390,780.

To all whom it may concern:

-Be it known that I, EMORY P. COOK, acitisylvania, have invented certain'new and useful Improvements in Railway Signal Systems, of which the following is aspecifica- My invention relates to electric signal sys- 'tems, and particularlycontemplates the'provision of an electric block signal system in which a train will be automatically signaled on the presence of another train within either of the 'adjacentblocks, and onthe presence of an open switch, landslides or like obstrucg tion or danger. 1 Broadly my invention consists in the provisionofa normally open main circuit within eachb'lock adapted to be'clo'sed by the passtrain, andin' the-provision of certain signa s within the cab of the locomotive which will remain inactive when such closing of the' main clrcult is effected. The main circuit of e'ach 1s,how ever', so arranged as to nclude -1n' its completion, certain elements of .the main circuit of the adjacent blocks, wherebywhen a train-is .in one block and another train is in the adjacent block neither train may com-,;

plete its main circuit and the signals of both trains will, thereupon, be actuated. i My invention consists, further in the provision of each switch with contactsiincluded within the main circuit of its block and so arranged as to prevent the closing of said main ircuit when said switch left open to apassingtrain, I

My invention consists, further, in the pro-, vision of means within the main circuit of each block, which will operate to prevent the closing of said circuit when a landslide or My invention further and specifically re sidesin the following features of construetion, arrangement and operation as will be hereinafter described with reference to the accompanying drawings forming apart of this specl cation, in which like numerals are used to designate like parts throughout the several figures, and in which,

Figure 1 is a diagrammatic plan of the blocks audtheir main circuits, Fig. 2 is an elevation, partly in section, of certain elements within the main circuit, Fig. 3 is an elevation, partly in section, of another element of the main circuit, Fig. 4 is an elevation of an element of the cab circuit, Fig. 5 is a plan view of a switch and its contacts constructed according to my invention, Fig. 6 is vention, I provide the rails A with a p1u' rality of insulated sections B,'at the beginning and end of'e'achhlocli, each of said sections at one block beingRnnected to their respective one of the magnets l, 2, 3and4.

shown'jn Fig. l, the circuits on ma ets 1, 2, 3 and 4;will be successively clo ed through batinfi 20,,wire 21, rail.. 79 through the axleo t the llocomotivefthrough one of the As a train enters-block '2 fromgbglgfl: 1 assections BT-through respective ones of the .;li1:2 5;30,33 and 36 to magnets 1, 2, 3 and ,4 ,'"through"said magnets and through their wires 27, 32, 35 and 38 and the common return wire 29 to battery 20.

Asthe magnets 1, 2, 3 and 4 are energized their respective armatures 39,40, 41 and 42 will be raised to momentarily makecontact with their contacts 43 and 43, 44 and 44, 45 and 4 5, and 46 and 46respectively. As the armature 41. is raised to make contact between points 45' and 45 a circuit will be completed through the solenoids 11 and 12 and 11 and 12 of block 2 as follows;'

battery 20, wires 47, 49, 50, 52 to solenoid 11, through solenoids 11 and 12, wires 53, 54, 55, 56, 57, contacts '45 and 45, and armature 41,wire 58, solenoids 11 and 12, and wires 60' and 61 back to batterv,-and thus pulling the armatures 19 and 51 down,-

should they be raised. Asthe armature 42 is raise l;to,1nake contact between points '46 and 46" a circuit will be completed through the solenoids 9 and 10 and 9 and 10 as-follows; battery 20, wires 47, 49, 50, 62 to solenoid 9, through solenoids 9 10, wires 64, 65, 66, 67 through contacts 46 and-46 by means of the armature 42, Wires 68, 69 through solenoids 9 and 10, wire 70,wire 61 back to battery, thus raising the armatures 19 and 51 to the position shown in Fig. 1,

said armatures being held upward by means of permanent magnets a: and The train has now, passed into block 2 and with armatures 19 and 51 in 'theupper position and armatures l9 and 51 of blocks 1 and 3 respectively in the lowered position, the main mil circuit of block 2 will be completed as follows; battery 20, wires 47, 49, 50, 71, contact 72, armature 51, contact 73, wire 74, contact 75, block 3, armature 51, contact .76, wire 77 to rail 79 at 78, through rail 79 to wire 80, through wires 80, 81 to contact 82, block 1, armature 19 to contact 83, wire 84, contact 85, armature 19, contact 86, wires 87 and'61 back tobattery.

Now suppose a train enters block 2 from block 3. This will cause the completion of the circuit through magnets 4, 3, and 1 in the order named, in the same manner as previously described with relation to magnets 1, 2, 3 and 4. This will raise 'armatures -'40 and 39,thus first lowering and then raising the armatures 19 and 51 as previously described. The armatures 19 and .51 of block 2 being raised and the armatures 19 and 51 of blocks 1 and 3 respectively being lowered, the train entering block 2 from block 3com letes the main circuit of block 2 as previous y described. Thus it will be seen that when armatures 19 and 51 of block 2 are raised and armatures 19 and 51 of blocks 1 and 3 res ectively are lowered the main circuit of book 2 may he completed, but should a train be withinv block 3 this'would prevent the lowering of armature 51 and raising of armature 51, and thus revent the closing of theunain circuit in lock 2. In this case, the main circuitsof blocks2 an 3 will be thrown open and sig- 102 and'opei'ating an oscillatory contact arm 103 by the movement of said switch 'iece.'

The wire 49 of the main circuit of the lock is connected to the arm 103 and to a contact piece 104 with which said contact arm is normally in engagement. When, however, the switch piece 100 is against the rail A, the arm 103 'wil be moved out of contact with piece 104, thus preventing the closing of the main .circuit of the block.

Fig. 6 illustrates" an auxiliary circuit for preventin the closing of the main circuit in the case 0? landslides.- A magnet 105 is provided with an armature 106 bridging contacts 107, to which the wire 49 of the main circuit is connected, while said magnet is inactive. The magnet 105 is provided with a Wire 108 grounded at 109 and with'a wire 110, having a battery'lll in circuit therecircuit within the locomotive cab.

of an engine make as good contact with the the block the main circuit of such block, may

not be completed, while it is further my idea to provide towers at intervals along the system, in"which the operator may break themain circuit or prevent its completion and thus stop the tram. In either of these cases,

and whenever the main circuit is not completed, signals will be sounded by an engine Inasmuch as, currents will always divide in inverse proportion to the resistance of circuits, whether there are two or a hundredv circuits in-shunt, and inasmuch as the wheels rails as a soldered connection, I ropose to mount a milli-volt meter "113 wit in the lo comotive cab, havin its leads 114 and 115 connected respective y to the pony wheels D, and to the tender wheels E, by a brush con tact 116 illustrated in Fig. 8.. Thus t of the current sent through the rails "come up through the pony wheels-D, through the milli-volt meter and its leads, and back through the wheels E of the tender. The slightest current will be sufficient to throw the pointer 117 of the meter 113 against one of the arms of the contact 118 to com lete a circuit from the battery 119, throng wire 1.20, pointer 117, contact 118, wire 121, to magnets 122, illustrated in detail Fig. 4, through wire 123 back to battery. Thiscireuit will raise armature 124, rocking lever 125 on its pivot 126 within a housing 127, and throwing its forward hooked end 127 in engagement with a notched release wheel 128 of a spring motor 129 for operating a mechanical bell 130. Lever 131 resting on the armature 124 will also be raised withdrawin its engaging hook 132 from the notched whee 'l28, 'and moving its contact .plate 133 into contact with a' piece 134 mounted on the" housing 127. Should-the mairicircuit of the. block be open for 'any one'of the causes heretofore named, the pointer .117 will fall, at 1 20 once, to zero, breaking the circuits on magnets 122. Armature 124 will thereupon dro closing a circuit on the electric bells 135 as f dllows; from battery 119, wire 136, contact 137, armature124, contact 138, (Fig 4), wire 139, contacts 133- and 134,

. i electric bells 135, wire 141 back to battery, thusrin ing electric bells 135.

It will be understood that lever 131 does not drop with armature 124 while lever 125 'struction and will according until such obstruction is cleared, or. ex-

plained, or untilthe main eircuit s again closed. To-stop the bells, the engineer need only throw the handle 1420f lever 131 u pwardly thus arting the electriebell circuit: and moving t e hooked end 132 ofsaid lever 131 into engagement with the notched wheel'12'8 of spring motor 129 and thus stopping the mechanical bell 130.

As an alternative form of means pleting the engine bell apparatus circuit just described, Imay employ the apparatus 'illus-. trated in Figs. 9, 10, and 11. wires 77 of the ,main circuit illustrated -in Fig. 1 will be led to solenoids 143, at the end In this form,

of each block, and the current will pass through said solenoids 143, wire 144, contacts 145 and armature 146, wire 147 rails A to wire 148, solenoids 149, wire 150, contacts 151 and armature-152, wire 81 to contact 82- (Fig. 1). This would complete the main circuit and ull armatures 162 down at each end of bloc -2,'while. should the main circuit fail to close, said armatures will remain up under 'ressure of a coil s ring, 153 (Fig 10). Eac block is similary equipped, as shown, and the rails A, are providedwithan insulated section 154, :at the end of each block between the connections thereto of wires 147 and 148. In this form, the locomotive is provided with a depending yoke frame 155 having a su porting. rod 156 secured therein. Movab mounted on said rod 156 is a contact arm 157 having a coil said arm in a vertical. position.

spring 158 attached to the frame 155 to hold contact arms 159 are pivoted onthe rod 156 and are provided 'with coil springs 160 at their upper ends, attached to the frame 155 to pull said up er ends apart and through the lower ends t ereof, into contact with the arm 157 when-the same is in the vertical position. The casings 161 holding the solenoids'143 and 149 are mounted betweenthe rails A,and their ,armatures 162, are provided with vertical members163, projecting I through the easing'161 and arranged in the the contactarm 157. The contact arms 159 are provided with short connecting ropes 164, leading thereto from the operating rope 165, by which the engineer may pull t 6 'upper ends of the arms 1'59 inwardly and lower long part 165 and an upper short part for com- A pair of.

spread the lower ends thereof correspond.- ingly to allow the contact arm 158 to return to the normal position after actuation.

-By reference to Fig. 3, it will be noted that the armature 39 is in two parts, namely a 166. Thus it will be seen that, when the magnet is energized both parts will be drawn a:

upward, the lower lo'ng'part 165 striking contacts 43 and 43 and dropping at once to the:- normal position, and effecting only a momen.-'

tary contact which is all that is-desired.

Although, the elements herein shown and v 1 described are fully ca iable of performing their several functions may employ other 30 and different .means of accomplishing my objects and wish to preserve all suchmeans as fall within the spirit of in invention, and the terms of" the followingc aims.

Having thus fullydescribed my invention, I claim:

1. In' an electric block signal system, amain circuit established within each block, and including in its completion, elements of the main circuit of the'adjacent blocks, and an engine circuit including signals adapted to be actuated upon the failure of the main circuit to close, substantially as described.

2. In an electric block signal system,- a main circuit established within each block, and including elements of the main circuit of the adjacent block, supplemental circuits, i. adapted to be completed by a train for arranging said elements to close said main circuitwithin the block, and to open the main circuits of theadjacent blocks, and a cab signal apparatus ada ted to be actuated u on the ailure of sai main circuit to close, substantially as described,

3. In an, electric block signal system, a main circuit established within each block and including elements of the main circuit of the adjacent blocks, su plemental circuits adapted to be complete by a train, for arranging said elements to close said main circuit-within the block, and to open the main circuits of adjacent blocks, and an engine circuit including signals ada ted to be actuated upon the failure of sai main circuit.

4. In an electric block signal system, a main cir cuit established within-each block, and including elements of the main circuit of the adjacent blocks, su plemental circuits, adapted to be complete by a train, for arranging said elements to close said main circuit within the block, and to open the main circuits of the adjacent blocks, and an engine signal a )paratus including electrical and mechanical alarms adaptedto'be actuated upon the failure of said main circuit, to close, substantially as described.

5. In an electric block signal system, a main circuit established within each block, and including movable elements within; itself and within the main circuits of the ada plurality of supplemental circuits within each block and adapted to be completed by a train within ablock to arran e said element to close the main'circuit of the block and 0 en the main circuits of adjacent blocks, am an engine signal a para tus adapted to be actuated upon the ailure of said main circuit to close, substantially as described.

6. In an electric block signal system, a main circuit established Within each block and including movable elements within itself. and within the main circuits of the adjacent blocks, a plurality of supplemental circuits j'acent blocks,

sssm os within each block and ada ted to be completed bya train within a lock to arrange said elements to close the main circuit of the blEEEHIijlQQHflJlIG main circuits of adjacent -bloc'ksf'and an engine circuit including signals, adapted to be actuated upon the failure of said main circuit to close, substantially as described.

In testimony whereof I affix in presence of two witnesses.

EMORY P. COOK. Witnesses J. W. MESSERSMITH, MARK MUMMER.

my signature 

